C : Copper casting
Castings are widely used in machinery manufacturing, ships, aviation, automobile, construction and other industrial sectors, and play a certain role in heavy non-ferrous metal materials, forming copper casting series.
B : Sand casting
Sand casting is made of clay bonded sand as molding material. It is a time-honored process and the most widely used process.
A : Precision casting
Precision casting is precision casting, a special casting. The parts obtained by this method generally do not need to be machined. It can obtain relatively accurate shape and high casting precision.